var testMixins2 = {
    data () {
        return {
            a: 2,
            reactObj: {
                react2: 2
            },
            reactArr: [2]
        };
    },
    created () {
        console.log('mixins2 created');
    },
    methods: {
        say () {
            console.log('mixins2 say: hello mixins2.');
        }
    },
    computed: {
        b () {
            return this.a + 2;
        }
    },
    watch: {
        a (v, oldV) {
            console.log('mixins2 watch, a is changed:', v, oldV);
        }
    }
};